Motor-vehicle.



PATENTED MAY 21, 1907. G. ROTHGIESSER.

MOTOR VEHICLE. APPLICATION FILED FEB. a, 1907.

- 2 SHEETS-SHEET 1.

qwitmwco i No. 854,432. PATENTED MAY 21, 1907.

G. ROTHGIESSBR.

MOTOR VEHICLE. APPLICATION FILED FEB. 23. 1907.

2 SHEETSSEEET 2.

FIG. 4

QWi bwmao o & 8 WW vyfoi flttoznaj W UNITED STATES PATENT OFFICE.

GEORG ROTHGIESSER, OF BERLIN, GERMANY.

MOTOR-VEHICLE.

' Specification of Letters Patent.

Patented May 21, 1907.

Applicatlon filed l ehruary 8, 1907. Serial No. 356,312

To all whom, it 71mg concern:

Be it known that I, GEoRe Rornomssnn, a citizen of the German Empire, residing at Berlin, in the Kingdom of Prussia, Germany,

tor bicycle (cheapness, easy attendance, simplicity) are combined with the advantages of a motor car (convenient seating, steadiness and the like). When compared with a motor car or a motor bicycle the present combination has the advantage that the steering and the attendance of themotor can be at any time done by two persons, seated on the right and the left side of the motor and having the handle bar in front of them, which feature may be of importance in case of danger. I

The new vehicle consists essentially and preferably of a motor bicycle, the saddle of which is removed and the handle bar of which is replaced by a'modified one; further of a horizontal cross beam carrying the elase tically supported seats, said cross beam passing clear through the bicycle frame and carrying at both ends on the right and left a wheel, which can move quite independently of each other. This cross beam has toward it back on either side a brace,.which is pivoted to the frame of the bicycle near to the axle of the back wheel in such a manner (Fig. 2) that the cross beam can oscillate around an axis which lies near and parallel to the axle of. the back wheel. Instead of being directed backward the said braces may also be directed forward and be pivoted in a similar manner to the front part of the bicycle frame.

As the center of gravity of thewholesystom lies about in the plane in the middle be tween the two side wheels, the thus constructcd vehicle affords a certain safety against upsetting when turning curves even if only one of the seats is occupied.

' In order to provide the driving wheel (the back wheel of the bicycle) with a sufficient adhesion weight, an elastically supported adjustable device is provided between cross beam and bicycle frame, which allows of let ting the load have more or less effect on the back wheel or on the two side wheels, in such a manner, that by a simple manipulation it is possible to free the back wheel from all load and so allow of starting'the-motor when the vehicle is standing still.

The new arrangement represents conse-v quently in principle a trailer with two seats moved more forward, which however by the seats beingnext to the motor bicycle allows of steering the bicycle andattendi-ng the motor from either seat of the trailer.

' In the accompanying drawings'Figuresl', 2 and 3 illustrate a construction of the invention in its details, Fig. 1 being a perspective total view of the vehicle, the/ seats having been removed, Figs. 2 and 3 show details. Fig. 4 is a diagrammatic plan, in which ac is the frame of the motor bicycle, .y and z are the two seats.

In the drawings, in Fig. l, a .is the front wheel of the bicycle, b the back wheel, -.c is the right side wheel, .cZ- is the left side wheel, e is the cross beam,

and -g are the horizontal braces attached with the cross beam and connected at hand i with the frame. v

In Fig. 2 the arrangement for adjusting the cross beam with relation to the bio cle is shown separately. b is the back wl ieel of the bicycle, Z, Z, Z, Z are parts of the bicycle frame. Instead of the saddle bracket part m is provided, which carries a horizontal axis n around which the lever 0 turns. This lever has near to its pivot a disk shaped enlargement p and a lug g, in which the end of a wire rope ris adjustably secured. This wire rope lies in a groove in the rim of disk -p and is secured with its other end to a spring s which works on the cross beam. On the latter works also a second spring t which is secured by an adjustable screw 'u to the strap -'v provided on frame part Z. The front end of the lever 0 is held by the catch w provided on frame Z.

The arrangement operates in such a manner, that by varying the tension of the upper spring s by means of rope 1', the crossbeam e is raised or lowered respectively, which effects a variation of the load on the two side wheels as compared with the back wheel. Therefore the load can be transferred at will more on the side wheels or on the back wheel. If by releasing the catch -w the lever 0 is' entirely released,

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so that spring -s effects no more upward pull on t 1e cross beam e, 'the back wheel b will be entirely'free of all load, as nowspring 't-. .wi ll raise stra -'v,- and there with the frame of the blcycle. The back portion of the bieycle then rests. on the .two' side wheels, while the driving wheel is raised.

In this position.' 'tl1e motor can be started, while the vehicle. is standing still; this can be done in .the u'sualamanner by using one ofthe two pedal cranks as starting crank,' and' the vehicle -,can be convenientlymade to,

start by vgraduallylowering the lever -0- and thereby increasing. the pressure of the back wheel on'the ground.

The form of .the handle baris preferably. made as shown iir'Fig. 3, in plan view, so that from both the right and left" seat mand y respectively the handle can be seized.

Having now described my invention what I claim'and desire to secureby Letters Patent of the United States is: 4 1. In a motor vehicle the combination of a motor bicycle with a framehaving on each.

side ofthe motor bicycle a runner wheel and a seat, which seats-are arranged as close to the motor bicycle as possible, so that the motor and steering gear can be operated and.

attended from both seats. 2. In a motor vehicle a motor bicycle with a frame-having on each side of the motor bicycle a runner wheel, said frame consisting of a cross-beam passing clear crosswise through-the frame of the hithe combination of l cycle', .and seats on said cross beam arranged as close as possible'to the motor bicycle.

3. In a motor vehicle the combination of a motor bicycle with a frame having on each side of the -motorbicycle'a runner wheel, said frame consisting of a cross-beam passing clear crosswisethroughthe frame of the bicycle, seats on said crossbar, and a horizontal axis on 'the frame of the bicycle to which the cross beam is pivoted.

4. In a motor vehicle the combination of a seat, between the frame of: the bicycle and theframe of the runner wheels, said runner ;wheel'frame consists of 'a cross beam, and an a motor bicycle with a frame having on each 'side of the motor bicycle a runner wheel and elastic device mounted between the cross beam and the bicycleframe to adjust the load on the rear wheel.

5. In a motor vehicle the' combination of amotor bicycle with a frame having on' each side of the motorbicy'cle a runner wheel, said frame consisting of a pivotally" arranged cross beam passing clear through the frame -of the bicycle, and an elastic device for adjusting the load on the rear wheel consisting of arope 'and two springs so arranged that i by pulling or releasing said rope the cross 

